Add commitment Root variant, and add fleshed out --commitment arg to Cli (#9806)

automerge

clap-utils/src/commitment.rs

@@ -0,0 +1,17 @@
+use crate::ArgConstant;
+use clap::Arg;
+
+pub const COMMITMENT_ARG: ArgConstant<'static> = ArgConstant {
+    name: "commitment",
+    long: "commitment",
+    help: "Return information at the selected commitment level",
+};
+
+pub fn commitment_arg<'a, 'b>() -> Arg<'a, 'b> {
+    Arg::with_name(COMMITMENT_ARG.name)
+        .long(COMMITMENT_ARG.long)
+        .takes_value(true)
+        .possible_values(&["default", "max", "recent", "root"])
+        .value_name("COMMITMENT_LEVEL")
+        .help(COMMITMENT_ARG.help)
+}